专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2007089298A Contracting method for generator excitation system model and pss model of electric power system 有权
标题翻译：电力系统发电系统模型和PSS模型的承包方法
公开(公告)号：JP2007089298A
公开(公告)日：2007-04-05
申请号：JP2005274410
申请日：2005-09-21
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , UEDA TOMOYUKI , YAMAGISHI YOSHIO
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a method for accurately contracting an electric power system even if a different type of model exists in a generator excitation system before the power system is contracted. SOLUTION: This contracting method for the generator excitation model of the electric power system consists of: a first step for preparing, corresponding to an exciting system, constant data of respective generator excitation models before contract; a second step for calculating constant data about a temporary model from the constant data prepared in the first step after respective generator excitation models before contract are shaped into a temporary fixed shape model, focusing on a constant which has much effect on synchronization stability; a third step for weight-averaging the calculated constant data; and a fourth step for calculating the constant data after contract on the basis of the weight-averaged value and an experience value to contract the generator excitation model to a general simplified model. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在电力系统收缩之前在发电机励磁系统中存在不同类型的模型，也提供了一种用于精确地收缩电力系统的方法。
解决方案：该电力系统发电机励磁模型的承包方式包括：对应于励磁系统的第一步，在合同之前准备相应发电机励磁模型的常数; 第二步骤，从在合同之前的各个发电机激励模型成形为临时固定形状模型之后，从在第一步骤中制备的常数数据中计算临时模型的常数数据，重点关注对同步稳定性有很大影响的常数; 第三步，用于对所计算的常数数据进行加权平均; 以及第四步骤，用于根据权重平均值计算合同后的常数数据，以及将发电机励磁模型收缩到一般简化模型的经验值。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2008131829A Method and program for calculating load model constant of lower-order system 有权
标题翻译：用于计算下位系统负载模型常数的方法和程序
公开(公告)号：JP2008131829A
公开(公告)日：2008-06-05
申请号：JP2006317259
申请日：2006-11-24
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , UEDA TOMOYUKI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To connect a load in a lower-order system viewed from an observation point to a system reactance in series behind a fixed admittance, to assume a first load model having a fixed impedance load and an induction machine load parallel-connected behind it, and to accurately obtain the induction machine inertial constant and the induction machine ratio. SOLUTION: A method includes a step of obtaining the value of the system reactance from a load model which is different from the first load model and observation data; a step of calculating the voltage value behind the system reactance from the value of the system reactance, the observation data and the first load model, and representing active power and reactive power at the observation point, based on active/reactive power simulation functions of the first load model for considering the induction machine ratio and the induction machine inertial constant as the unknown quantity, by utilizing the calculated voltage value and the observation data; and a step of making the active/reactive power observation data and the active/reactive power simulation functions fluctuate at the observation point with an unknown quantity, comparing square errors, and determining the value for which the square error becomes a minimum as the induction machine ratio and the induction machine inertial constant. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：将从观察点观察的低阶系统中的负载连接到固定导纳后串联的系统电抗，假设具有固定阻抗负载和感应电机负载的第一负载模型并联在其后面，并准确获得感应电机惯性常数和感应电机的比例。解决方案：一种方法包括从不同于第一负载模型和观测数据的负载模型获得系统电抗值的步骤; 根据系统电抗值，观测数据和第一负载模型的值计算系统电抗背后的电压值，并根据有效/无功功率模拟功能，在观测点表示有功功率和无功功率通过利用计算的电压值和观测数据，考虑感应电机比率和感应电机惯性常数作为未知量的第一负载模型; 使有功/无功功率观测数据和有功功率/无功功率模拟功能在观察点处以未知量波动的步骤，比较平方误差，并确定平方误差成为最小值的值作为感应电机感应电机惯量常数。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2005080457A Electric power system synchronously paralleling method and synchronously making device 有权
标题翻译：电力系统同步并联方法和同步制造装置
公开(公告)号：JP2005080457A
公开(公告)日：2005-03-24
申请号：JP2003310230
申请日：2003-09-02
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , KANAO NORIKAZU , UEDA TOMOYUKI
IPC分类号： H02J3/08 , H02J3/42
摘要： PROBLEM TO BE SOLVED: To provide an electric power system synchronously paralleling method and a synchronously making device that can expand system making conditions while securing the accuracy of synchronous making and that can parallel systems speedily without missing the timing of synchronous paralleling.
SOLUTION: In the electric power system synchronously paralleling method in which a plurality of the electric power systems are synchronously paralleled, a frequency difference Δf and a phase difference Δδ of power supplies of two systems to be synchronously paralleled are detected. Using the frequency difference Δf and phase difference Δδ, a value of energy function: U shown in the figure, where M: unit inertial constant (sec) of a single system, Δω: an angular frequency difference of two systems 2πΔf(rad/sec), X: impedance of a single system (p, u based on system capacity), Δδ: a radian value of the phase difference of the two systems 2πΔθ(° )/360(rad/sec), is calculated. On condition that the value of the energy function: U has come into a preset permissible range, a synchronously inputting command is output to a breaker 3.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供同步并联方式的电力系统和同步制造装置，其可以在确保同步制造的精度的同时扩大系统制造条件，并且可以快速并行系统，而不会丢失同步并联的时序。解决方案：在多个电力系统同步并联的同步并联方式的电力系统中，检测要同步并联的两个系统的电源的频率差Δf和相位差Δδ。使用频差Δf和相位差Δδ，图中所示的能量函数值：U，其中单位系统的M：单位惯性常数（sec）Δω：两个系统的角频差2πΔf（rad / sec ），X：单个系统的阻抗（基于系统容量的p，u），Δδ：计算两个系统的相位差的弧度值2πΔθ（°）/ 360（rad / sec）。在能量函数值U已经达到预设的允许范围的情况下，同步输入命令被输出到断路器3.版权所有：（C）2005，JPO＆NCIPI

4. 发明专利

JP2006203985A Method of calculating constant, and calculation program of low rank system load model 有权
标题翻译：计算常数的方法和低RANK系统负载模型的计算程序
公开(公告)号：JP2006203985A
公开(公告)日：2006-08-03
申请号：JP2005011167
申请日：2005-01-19
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , KANAO NORIKAZU , UEDA TOMOYUKI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a method for storing the physical image of the load of a lower position system of an electric power system, finding out the load model with few parameters, and calculating the parameters. SOLUTION: A lower-order system load is assumed as a model in which a series circuit consisting of a constant reactance X L and a variable capacitor G L and a constant admittance B C are connected in parallel. Observation data at the time of lowering an instant voltage are used to indicate X L with a data application formula, which uses B C as a variable by observation/analysis data and a prescribed formula. The data application formula is solved, by using a substitute to determine positive/negative of an inclination of a linear function by primarily approximating the obtained X L . A series of routines for increasing/decreasing the substitute of the data application formula, in such a direction that the inclination is reversed for each constant value, solving the data application formula, and obtaining of the inclination is repeated, until the inclination is positive/negative reversed to approximate the inclination of the next function to 0. A substitute value, when the inclination is reversed, is taken as B C . COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于存储电力系统的下位置系统的负载的物理图像的方法，找出具有很少参数的负载模型，并计算参数。
解决方案：将低阶系统负载假定为其中由恒定电抗X L 和可变电容器G L 组成的串联电路的模型，以及恒定导纳B C 并联连接。降低瞬时电压时的观测数据用数据应用公式表示X L ，通过观察/分析数据将B C 作为变量，规定的公式。通过使用替代方法通过主要近似所得的X L 确定线性函数的倾斜度的正/负来解决数据应用公式。重复一系列用于增加/减少数据应用公式的替代物的方法，以使得对于每个常数值的倾斜反转的方向，解决数据应用公式和获得倾斜度，直到倾斜为正/ 负相反，将下一个功能的倾斜度近似为0.当斜率反转时，替代值取为B C 。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2005348586A Contraction program for low-order system of electric power system, and contracting method 有权
标题翻译：电力系统低位系统承包方案及承包方法
公开(公告)号：JP2005348586A
公开(公告)日：2005-12-15
申请号：JP2004168882
申请日：2004-06-07
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , KANAO NORIKAZU , UEDA TOMOYUKI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a contraction program, by which a subsystem of electric power in which a motor and load are intermingled is contracted by a single-unit/single-load/three-branch method, the impedance of three-branches after contraction is computed by a computer, and input errors at such time are reduced. SOLUTION: The contraction program for making a computer execute following steps wherein the computer calculates the impedance of the three-branches for the purpose of contracting the subsystem to a single-unit/single-load/three-branch form, which branches the branches into a Y type when viewed from a contracting point; of indicating an input form, computing a tidal current of each branch, computing complex phases by node, calculating the weighted averages of the complex phases at the nodes of each generator and the nodes of each load, computing the short-circuiting impedance at the contracting point node, and computing each impedance of the three-branches after contraction; a step of indicating the input form is provided with a column in which node numbers of an upper side and a lower side, the impedance, effective power of the generator, load electric power consumption, rated capacity of the generator and direct-axis transient reactance for each branch are input after relating these, as a state of the subsystem before contraction. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种收缩程序，通过该收缩程序，电动机和负载混合的电力子系统通过单一/单负载/三分支方式收缩，阻抗为3 收缩后的分支由计算机计算，并且此时的输入错误减少。
解决方案：用于使计算机执行以下步骤的收缩程序，其中计算机为了将子系统收缩到单个/单负载/三分支形式的目的来计算三分支的阻抗，其分支从订约点看，分支为Y型; 指示输入形式，计算每个分支的潮汐流，逐点计算，计算每个发生器的节点和每个负载的节点的复相位的加权平均值，计算收缩时的短路阻抗并计算收缩后三分支的每个阻抗; 指示输入形式的步骤具有上下侧的节点编号，发电机的阻抗，有效功率，负载功率消耗，发电机的额定容量和直轴瞬态电抗的列对于每个分支，在将这些之后作为子系统的状态在收缩之后进行输入。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2010239782A Method and program for analysis of fluctuation in natural energy generation output, and estimation method 有权
标题翻译：自然能源生成输出中波动分析的方法与程序及估计方法
公开(公告)号：JP2010239782A
公开(公告)日：2010-10-21
申请号：JP2009085344
申请日：2009-03-31
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： YAMAGISHI YOSHIO , UEDA TOMOYUKI , KANAO NORIKAZU , KOMAMI SHINTARO
IPC分类号： H02P9/00
摘要： PROBLEM TO BE SOLVED: To analyze fluctuation in power generation output of natural energy generators at a plurality of sites in a meso scale region to be analyzed for expression in general formula. SOLUTION: Wind power generators or the like are installed at N places, outputs of the wind power generators or the like actually measured at the N places are totally summed to obtain the actually measured total output fluctuation S(f) in a certain frequency f, the outputs of the wind power generators or the like actually measured at the N places are individually obtained for each of the N places as the actually measured individual output fluctuation Si(f), and the actually measured total output fluctuation S(f) is expressed by the transition total output fluctuation Stra(f) shown in numerical formula on the assumption that synchronization is disrupted in and after a certain fluctuation period Tx and transition is caused at random. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：分析在通式中表达的中尺度区域中的多个位置处的自然能发生器的发电输出的波动。解决方案：将风力发电机等安装在N个地方，在N个地方实际测量的风力发电机等的输出完全相加，以获得实际测量的总输出波动S（f）频率f，在N个地点实际测量的风力发电机等的输出分别作为实际测量的各个输出波动Si（f）和实际测量的总输出波动S（f ）由在数学公式中所示的过渡总输出波动Stra（f）表示，假设在某个波动周期内和之后同步被中断，并且随机地引起转变。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2008228454A Control method and controller of inverter system device for distributed power supply 有权
标题翻译：用于分布式电源的逆变器系统装置的控制方法和控制器
公开(公告)号：JP2008228454A
公开(公告)日：2008-09-25
申请号：JP2007063525
申请日：2007-03-13
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , UEDA TOMOYUKI
IPC分类号： H02J3/38 , G05F1/70 , H02J3/16 , H02M7/00
CPC分类号： Y02E40/34
摘要： PROBLEM TO BE SOLVED: To suppress excess current caused by reactive power control by an inverter system device and to prevent reactive power control from continuing for long time when system voltage drops compared to stationary voltage due to instantaneous drop (including a case when system voltage rises to stationary voltage after instantaneous drop restoration). SOLUTION: In the control method of the inverter system device 4 converting DC power of a distributed power supply 5 into AC power and outputting it to a power system, reactive power is suppressed in accordance with system voltage actual value and reactive power of advance is output when system voltage returns to stationary voltage from instantaneous drop. When voltage on a power system-side rises much more than stationary voltage after drop of stationary voltage, effective power is maintained and reactive power of delay is output in accordance with a system voltage effective value, and voltage is maintained within a permission excess current range. Output of reactive voltage is gradually made smaller than a value corresponding to the system voltage effective value from instantaneous voltage drop time, and it is stopped after tens of seconds and is controlled with a constant power factor. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了抑制由逆变器系统装置的无功功率控制引起的过电流，并且当由于瞬时下降而导致的系统电压下降与稳定电压相比较时，防止无功功率控制长时间持续（包括瞬时恢复后系统电压上升到稳定电压）。解决方案：在逆变器系统装置4的控制方法中，将分布式电源5的直流电力转换为交流电力并将其输出到电力系统，根据系统电压实际值和无功功率来抑制无功功率当系统电压从瞬时下降返回到稳定电压时，提前输出。当电力系统侧的电压在稳定电压下降之后上升到比固定电压高得多时，保持有效功率并根据系统电压有效值输出延迟的无功功率，并将电压保持在许可过电流范围内。无功电压的输出逐渐小于瞬时电压下降时间对应于系统电压有效值的值，并在数十秒后停止并以恒定的功率因数进行控制。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2007221943A Method, device, and program for evaluating voltage stability in power system 有权
标题翻译：用于评估电力系统中电压稳定性的方法，装置和程序
公开(公告)号：JP2007221943A
公开(公告)日：2007-08-30
申请号：JP2006041252
申请日：2006-02-17
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , UEDA TOMOYUKI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a method for evaluating stability of a system voltage taking into consideration the transitional dynamic characteristics of a load, without having to execute numerical analysis simulation that require convergence calculation, and to provide a stability evaluation program. SOLUTION: A power system voltage stability evaluation method is constituted so that the power system having a plurality of the loads is contracted to one load system, having a load in which one simulated induction motor and one simulated constant impedance are connected in parallel, and voltage stability of the one load system is considered as the voltage stability of the system before the contraction. The power system voltage stability evaluation method is constituted of a data input process, in which a data input means receives input of numerical data of elements constituting the one load system, an electrical input calculation process, in which an electrical input calculation means reads in a calculation formula stored in a storage device so as to calculate the electrical input of the induction motor, by substituting the numerical data into the calculation formula; a mechanical output calculation process, in which a mechanical output calculation means reads a calculation formula stored in the storage device so as to calculate the mechanical output of the induction motor by substituting the numerical data into the calculation formula; a stability evaluation process, in which a stability evaluation means evaluates the voltage stability by comparing the electrical input of the induction motor with the mechanical output of the induction motor on a torque-speed plane; and a result output process in which a result output means outputs the result of the stability evaluation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种考虑到负载的过渡动态特性来评估系统电压的稳定性的方法，而不必执行需要收敛计算的数值分析模拟，并提供稳定性评估程序。解决方案：电力系统电压稳定性评估方法被构成为具有多个负载的电力系统收缩到一个负载系统，具有一个模拟感应电动机和一个模拟恒定阻抗并联连接的负载，并且一个负载系统的电压稳定性被认为是收缩前系统的电压稳定性。电力系统电压稳定性评价方法由数据输入处理构成，其中数据输入装置接收构成一个负载系统的元件的数字数据的输入，电输入计算处理，其中电输入计算装置读入计算公式存储在存储装置中，以通过将数值数据代入计算公式来计算感应电动机的电输入; 机械输出计算处理，其中机械输出计算装置读取存储在存储装置中的计算公式，以通过将数字数据代入计算公式来计算感应电动机的机械输出; 稳定性评价处理，其中稳定性评估装置通过将感应电动机的电输入与感应电动机的机械输出在扭矩速度平面上进行比较来评估电压稳定性; 以及结果输出处理，其中结果输出装置输出稳定性评估的结果。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2006262655A Transfer function calculating method and program of generator torque for evaluating pss control parameters 有权
标题翻译：用于评估PSS控制参数的传递函数计算方法和发电机转矩程序
公开(公告)号：JP2006262655A
公开(公告)日：2006-09-28
申请号：JP2005078677
申请日：2005-03-18
申请人： Hokuriku Electric Power Co Inc:The , 北陸電力株式会社
发明人： KOMAMI SHINTARO , KANAO NORIKAZU , UEDA TOMOYUKI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To easily evaluate PSS control parameters, and to simplify the correction work of the control parameters, as much as possible. SOLUTION: A transfer function calculating method of generator torque for evaluating the PSSs control parameters comprises a step of contracting an electric power system to a one-unit infinity busbar for a local mode; a step of contracting the power system to a single-unit single load 3-branch for a wide-area mode; a step of determining the dynamic block diagram of a generator, based on a detecting method of a ΔP+Δω type, then computing constants K1 to K6 in the dynamic block diagram separately for the wide-area mode and the local mode; a step of determining the general transfer function of PSSs by each control parameter of the Δω-type PSS and the ΔP-type PSS, after equivalence conversion of shaking suppression effects of the Δω-type PSS and the ΔP-type PSS; a step of computing an AVR transfer function from the AVR control parameter; and a step of computing the generator torque transfer function separately for the wide-area mode and the local mode making use of the constants in the dynamic block diagram, the general transfer function of the PSSs, and the AVR transfer function. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：尽可能简单地评估PSS控制参数，并简化控制参数的校正工作。解决方案：用于评估PSS控制参数的发电机转矩的传递函数计算方法包括将电力系统收缩到用于局部模式的单位无限母线的步骤; 将电力系统合并为广域模式的单机组单负载3分支的步骤; 基于ΔP+Δω类型的检测方法确定发生器的动态框图的步骤，然后分别针对广域模式和本地模式在动态框图中计算常数K1至K6; 在Δω型PSS和ΔP型PSS的振荡抑制效应的等效转换之后，通过Δω型PSS和ΔP型PSS的各个控制参数来确定PSS的一般传递函数的步骤; 从AVR控制参数计算AVR传递函数的步骤; 以及利用动态框图中的常数，PSS的一般传递函数和AVR传递函数，为广域模式和本地模式分别计算发电机转矩传递函数的步骤。版权所有（C）2006，JPO＆NCIPI

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式